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Byju's Answer
Standard XII
Chemistry
Potassium Dichromate
The equilibri...
Question
The equilibrium :
C
r
2
O
2
−
7
→
←
2
C
r
O
2
−
4
exists in
A
Acidic Medium
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B
Basic Medium
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C
Neutral Medium
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D
Does not exist
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Solution
The correct option is
B
Basic Medium
C
r
2
O
7
B
a
s
i
c
−
−−−
→
A
c
i
d
i
c
←
−−−
−
2
C
r
O
2
−
4
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0
Similar questions
Q.
Write balanced chemical equations for the conversion of
C
r
O
2
−
4
to
C
r
2
O
2
−
7
in acidic medium and
C
r
2
O
2
−
7
to
C
r
O
2
−
4
in basic medium.
Q.
In the following redox reaction
C
r
2
O
2
−
7
+
F
e
2
+
⟶
F
e
3
+
+
C
r
3
+
1
mole of
C
r
2
O
2
−
7
oxidises?
Q.
Calculate the electrode potential at
25
∘
C
of
C
r
+
3
,
C
r
2
O
2
−
7
electrode at
p
O
H
=
11
in a solution of
0.01
M
both in
C
r
3
+
and
C
r
2
O
2
−
7
.
C
r
2
O
2
−
7
+
14
H
+
+
6
e
−
→
2
C
r
3
+
+
7
H
2
O
E
∘
=
1.33
V
Q.
The equilibrium :
C
r
2
O
2
−
7
→
←
2
C
r
O
2
−
4
exists in
Q.
C
r
2
O
2
−
7
p
H
>
a
→
C
r
O
2
−
4
p
H
<
b
→
C
r
2
O
2
−
7
Find the value of
a
b
:
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